Changing the Game: Why the Royal Navy Needs Game Theory to Counter Grey Zone VesselsLt Clara Soffe RN

By Lt Clara Soffe RN

Message from the Editor

The author applies game theory to argue that the April 2026 operation against a Russian decoy-and-GUGI (Main Directorate of Deep-Sea Research) formation represents a game-theoretic inflection point, and sets out the dominant strategy the Royal Navy requires to make deterrence by denial of effect systematic rather than episodic.

A 10 minute read.

Russia’s repeated grey zone operations against UK undersea infrastructure have exposed a persistent cost asymmetry: the Royal Navy has been paying significantly more to respond than Russia pays to act. On 9 April 2026, the Ministry of Defence announced that the Royal Navy had identified and exposed a covert Russian operation in and around UK waters. A Russian Akula-class attack submarine had entered international waters in the High North, tracked continuously by HMS St Albans, RFA Tidespring, Merlin helicopters, and RAF P-8 aircraft. British personnel quickly established that the submarine was…

You are not currently logged in. Please sign in now or click here to join today.

Previous
Quotes of the Quarter
Next
The decline of international statute in modern conflict